<template>
  <div>
    <NavBar>
      <div slot="left" class="back"@click="backClick">
        <img src="@/assets/img/common/back.svg">
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles" class="title-item"
       :class="{active:index===currentIndex}"
             @click="titleClick(index)">
          {{item}}</div>
      </div>
    </NavBar>
  </div>
</template>

<script>
import NavBar from '../../../components/common/navbar/NavBar'

export default {
  name: 'DetailNavBar',
  components:{
    NavBar
  },
  data(){
    return{
      titles: ['商品','参数','评论','推荐'],
      currentIndex:0
    }
  },
  methods:{
    titleClick(index){
      this.currentIndex=index;
      this.$emit('titleClick',index)
    },
    backClick () {
      this.$router.back()
    }
  },

}
</script>

<style scoped>
.title{
  display: flex;
  font-size: 18px;
}
.title-item{
  flex: 1;
}
.active{
  color: var(--color-high-text);
}
.back img{
  margin-top: 12px;
}
</style>
